• Pertaining to heat or temperature.
  • Providing efficient insulation so as to keep the body warm.
  • Caused or brought about by heat.
  • Having a rough finish by treatment with a blow-torch.


  • A column of rising air in the lower atmosphere created by uneven heating of Earth's surface.


  • To create a rough finish on stone by treating it with a high-temperature blow-torch.
  • To fly an unpowered aircraft in a (thermal) column of rising air.


Similar words

  • thermal column

Narrower meaning words


  • From French thermal, from New Latin *thermalis, from Ancient Greek θέρμη ("heat"), from Proto-Indo-European *gʷʰer- ("to heat, warm").

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